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Completed mixer API. Improved iterators. Renamed control values struct. Rewritten simple elements implementation

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This commit is contained in:
Abramo Bagnara 2001-02-11 15:45:35 +00:00
parent 38033b49dd
commit a2d3434961
54 changed files with 2081 additions and 1712 deletions
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90
src/mixer/mixer_local.h
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@ -20,62 +20,94 @@
*
*/
//#include "../control/control_local.h"
#include "list.h"
#include "local.h"
typedef struct _snd_hctl_bag {
void *root;
void *private;
} snd_hctl_bag_t;
typedef struct _bag1 {
void *ptr;
struct list_head list;
} bag1_t;
int snd_hctl_bag_destroy(snd_hctl_bag_t *bag);
int snd_hctl_bag_add(snd_hctl_bag_t *bag, snd_hctl_elem_t *helem);
int snd_hctl_bag_del(snd_hctl_bag_t *bag, snd_hctl_elem_t *helem);
snd_hctl_elem_t *snd_hctl_bag_find(snd_hctl_bag_t *bag, snd_ctl_elem_id_t *id);
int snd_hctl_bag_empty(snd_hctl_bag_t *bag);
typedef struct list_head bag_t;
int bag_new(bag_t **bag);
void bag_free(bag_t *bag);
int bag_add(bag_t *bag, void *ptr);
int bag_del(bag_t *bag, void *ptr);
int bag_empty(bag_t *bag);
typedef struct list_head *bag_iterator_t;
#define bag_iterator_entry(i) (list_entry((i), bag1_t, list)->ptr)
#define bag_for_each(pos, next, bag) list_for_each(pos, next, bag)
struct _snd_mixer_class {
struct list_head list;
snd_mixer_t *mixer;
int (*event)(snd_mixer_class_t *class, snd_ctl_event_type_t event,
snd_hctl_elem_t *helem, snd_mixer_elem_t *melem);
void *private_data;
void (*private_free)(snd_mixer_class_t *class);
};
struct _snd_mixer_elem {
snd_mixer_elem_type_t type;
struct list_head list; /* links for list of all elems */
void *private;
snd_mixer_class_t *class;
void *private_data;
void (*private_free)(snd_mixer_elem_t *elem);
snd_mixer_elem_callback_t callback;
void *callback_private;
snd_mixer_t *mixer;
bag_t helems;
};
struct _snd_mixer {
snd_hctl_t *hctl;
struct list_head elems; /* list of all elemss */
struct list_head slaves; /* list of all slaves */
struct list_head classes; /* list of all elem classes */
struct list_head elems; /* list of all elems */
unsigned int count;
snd_mixer_callback_t callback;
void *callback_private;
};
#define SND_MIXER_SCTCAP_VOLUME (1<<0)
#define SND_MIXER_SCTCAP_JOIN_VOLUME (1<<1)
#define SND_MIXER_SCTCAP_MUTE (1<<2)
#define SND_MIXER_SCTCAP_JOIN_MUTE (1<<3)
#define SND_MIXER_SCTCAP_CAPTURE (1<<4)
#define SND_MIXER_SCTCAP_JOIN_CAPTURE (1<<5)
#define SND_MIXER_SCTCAP_EXCL_CAPTURE (1<<6)
struct _snd_mixer_selem_id {
unsigned char name[60];
unsigned int index;
};
struct _snd_mixer_selem {
unsigned int caps; /* RO: capabilities */
unsigned int channels; /* RO: bitmap of active channels */
#define CAP_VOLUME (1<<0)
#define CAP_JOIN_VOLUME (1<<1)
#define CAP_MUTE (1<<2)
#define CAP_JOIN_MUTE (1<<3)
#define CAP_CAPTURE (1<<4)
#define CAP_JOIN_CAPTURE (1<<5)
#define CAP_EXCL_CAPTURE (1<<6)
struct _snd_mixer_selem_info {
unsigned int caps; /* capabilities */
unsigned int channels; /* bitmap of active channels */
int capture_group; /* capture group (for exclusive capture) */
long min; /* minimum value */
long max; /* maximum value */
};
struct _snd_mixer_selem_value {
unsigned int mute; /* RW: bitmap of muted channels */
unsigned int capture; /* RW: bitmap of capture channels */
int capture_group; /* RO: capture group (for exclusive capture) */
long min; /* RO: minimum value */
long max; /* RO: maximum value */
long volume[32];
};
int snd_mixer_class_register(snd_mixer_class_t *class, snd_mixer_t *mixer);
int snd_mixer_add_elem(snd_mixer_t *mixer, snd_mixer_elem_t *elem);
void snd_mixer_free(snd_mixer_t *mixer);
int snd_mixer_remove_elem(snd_mixer_t *mixer, snd_mixer_elem_t *elem);
int snd_mixer_elem_throw_event(snd_mixer_elem_t *elem,
snd_ctl_event_type_t event);
int snd_mixer_elem_add(snd_mixer_elem_t *elem, snd_mixer_class_t *class);
int snd_mixer_elem_remove(snd_mixer_elem_t *elem);
int snd_mixer_elem_change(snd_mixer_elem_t *elem);
int snd_mixer_elem_attach(snd_mixer_elem_t *melem,
snd_hctl_elem_t *helem);
int snd_mixer_elem_detach(snd_mixer_elem_t *melem,
snd_hctl_elem_t *helem);
int snd_mixer_elem_empty(snd_mixer_elem_t *melem);